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a b s t r a c tIn this paper we theoretically discuss the magnetocaloric effect in the doped compound ðGd 1Àc Tb c Þ 5 Si 2 Ge 2 . To this end we use a model Hamiltonian of localized interacting magnetic moments including the magnetoelastic coupling and the Zeeman interaction. In order to treat the two body interaction we use an extension of the mean field theory in which is considered the type of magnetic rare earth ions is occupying the neighborhood of a given site. The obtained results of the magnetocaloric potentials are in very good agreement with the available experimental data.

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